单项选择题
A.我需要开窗吗? B.我需要开空调吗? C.我需要打开收音机吗? D.我需要等候您吗?
A.hello B.Good morning C.Good afternoon D.Very good
A.How can I go there? B.Where are you from? C.Do you want a taxi? D.What’s your name?